To accurately answer your question, I would need to know which specific poem by Paul Laurence Dunbar you are referencing, as he wrote many poems that explore themes of love and loss. However, given the four choices you've provided, I can help guide you to think critically about the content and themes generally explored in Dunbar's poetry.
If the poem largely revolves around themes of uncertainty, longing, or emotional turmoil related to love, then option (c) might be most appropriate. If it focuses on the definitive nature of losing love, then (b) could be correct.
Based on a common understanding of Dunbar's exploration of love and loss in his works, I would lean toward option (b): "The poem reflects the power of finality when a person loses love," as this option encapsulates feelings of grief and finality often presented in poetry dealing with love and loss.
However, please confirm the specifics of the poem for a more precise answer.